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Finding the Fourth Proportional to 229.28, 316.27 and 163.88

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Solution

The fourth proportional to 229.28, 316.27 and 163.88 is: 226.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.28 : 316.27 = 163.88 : x
  2. Step 2: Convert to fraction form
    229.28/316.27 = 163.88/x
  3. Step 3: Cross multiply
    229.28x = 316.27 × 163.88
  4. Step 4: Simplify right side
    229.28x = 51,830.33
  5. Step 5: Solve for x
    x = 51,830.33/229.28
  6. Step 6: Final answer
    x = 226.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.